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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2008 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: HL7Segment.html 21 2014-09-19 19:17:15Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.hl7;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.io.Serializable;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.ArrayList;<a name="line.11"></a>
<span class="sourceLineNo">012</span><a name="line.12"></a>
<span class="sourceLineNo">013</span>/**<a name="line.13"></a>
<span class="sourceLineNo">014</span> * Represents one segment in an HL7 message.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span>@SuppressWarnings("serial")<a name="line.16"></a>
<span class="sourceLineNo">017</span>public class HL7Segment implements Serializable {<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>    protected final ArrayList&lt;HL7Field&gt; fields = new ArrayList&lt;HL7Field&gt;();<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>    /**<a name="line.21"></a>
<span class="sourceLineNo">022</span>     * Constructor for {@link MSHSegment} use only.<a name="line.22"></a>
<span class="sourceLineNo">023</span>     */<a name="line.23"></a>
<span class="sourceLineNo">024</span>    HL7Segment() {<a name="line.24"></a>
<span class="sourceLineNo">025</span>    }<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>    /**<a name="line.27"></a>
<span class="sourceLineNo">028</span>     * Constructor that initializes the name of the segment only.<a name="line.28"></a>
<span class="sourceLineNo">029</span>     *<a name="line.29"></a>
<span class="sourceLineNo">030</span>     * @param name segment name<a name="line.30"></a>
<span class="sourceLineNo">031</span>     * @throws HL7ContentException if the name is an invalid segment name<a name="line.31"></a>
<span class="sourceLineNo">032</span>     */<a name="line.32"></a>
<span class="sourceLineNo">033</span>    public HL7Segment(String name) throws HL7ContentException {<a name="line.33"></a>
<span class="sourceLineNo">034</span>        this.setName(name);<a name="line.34"></a>
<span class="sourceLineNo">035</span>    }<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>    /**<a name="line.37"></a>
<span class="sourceLineNo">038</span>     * Constructor taking segment name and explicit fields.<a name="line.38"></a>
<span class="sourceLineNo">039</span>     *<a name="line.39"></a>
<span class="sourceLineNo">040</span>     * @param name segment name<a name="line.40"></a>
<span class="sourceLineNo">041</span>     * @param fields zero or more segment fields<a name="line.41"></a>
<span class="sourceLineNo">042</span>     * @throws HL7ContentException if the name is an invalid segment name<a name="line.42"></a>
<span class="sourceLineNo">043</span>     * @throws IllegalArgumentException if any field in the array is null<a name="line.43"></a>
<span class="sourceLineNo">044</span>     */<a name="line.44"></a>
<span class="sourceLineNo">045</span>    public HL7Segment(String name, HL7Field[] fields) throws HL7ContentException {<a name="line.45"></a>
<span class="sourceLineNo">046</span>        this(name);<a name="line.46"></a>
<span class="sourceLineNo">047</span>        for (HL7Field field : fields) {<a name="line.47"></a>
<span class="sourceLineNo">048</span>            if (field == null)<a name="line.48"></a>
<span class="sourceLineNo">049</span>                throw new IllegalArgumentException("null field");<a name="line.49"></a>
<span class="sourceLineNo">050</span>            this.fields.add(field);<a name="line.50"></a>
<span class="sourceLineNo">051</span>        }<a name="line.51"></a>
<span class="sourceLineNo">052</span>    }<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>
<span class="sourceLineNo">054</span>    /**<a name="line.54"></a>
<span class="sourceLineNo">055</span>     * Constructor that parses a segment line.<a name="line.55"></a>
<span class="sourceLineNo">056</span>     *<a name="line.56"></a>
<span class="sourceLineNo">057</span>     * @param line segment line<a name="line.57"></a>
<span class="sourceLineNo">058</span>     * @param seps separator and escape characters<a name="line.58"></a>
<span class="sourceLineNo">059</span>     * @throws HL7ContentException if the segment name is invalid<a name="line.59"></a>
<span class="sourceLineNo">060</span>     */<a name="line.60"></a>
<span class="sourceLineNo">061</span>    public HL7Segment(String line, HL7Seps seps) throws HL7ContentException {<a name="line.61"></a>
<span class="sourceLineNo">062</span>        this.parseAndAddFields(line, seps);<a name="line.62"></a>
<span class="sourceLineNo">063</span>    }<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>    /**<a name="line.65"></a>
<span class="sourceLineNo">066</span>     * Copy constructor.<a name="line.66"></a>
<span class="sourceLineNo">067</span>     */<a name="line.67"></a>
<span class="sourceLineNo">068</span>    public HL7Segment(HL7Segment segment) {<a name="line.68"></a>
<span class="sourceLineNo">069</span>        for (HL7Field field : segment.getFields())<a name="line.69"></a>
<span class="sourceLineNo">070</span>            this.appendField(new HL7Field(field));<a name="line.70"></a>
<span class="sourceLineNo">071</span>    }<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>
<span class="sourceLineNo">073</span>    /**<a name="line.73"></a>
<span class="sourceLineNo">074</span>     * Get segment name, e.g., &lt;code&gt;MSH&lt;/code&gt;, &lt;code&gt;PV1&lt;/code&gt;, etc.<a name="line.74"></a>
<span class="sourceLineNo">075</span>     * Equivalent to:<a name="line.75"></a>
<span class="sourceLineNo">076</span>     * &lt;blockquote&gt;<a name="line.76"></a>
<span class="sourceLineNo">077</span>     * &lt;code&gt;getField(0).get(0, 0, 0)&lt;/code&gt;<a name="line.77"></a>
<span class="sourceLineNo">078</span>     * &lt;/blockquote&gt;<a name="line.78"></a>
<span class="sourceLineNo">079</span>     */<a name="line.79"></a>
<span class="sourceLineNo">080</span>    public String getName() {<a name="line.80"></a>
<span class="sourceLineNo">081</span>        return this.fields.get(0).get(0, 0, 0);<a name="line.81"></a>
<span class="sourceLineNo">082</span>    }<a name="line.82"></a>
<span class="sourceLineNo">083</span><a name="line.83"></a>
<span class="sourceLineNo">084</span>    /**<a name="line.84"></a>
<span class="sourceLineNo">085</span>     * Set segment name.<a name="line.85"></a>
<span class="sourceLineNo">086</span>     *<a name="line.86"></a>
<span class="sourceLineNo">087</span>     * @param name new segment name<a name="line.87"></a>
<span class="sourceLineNo">088</span>     * @throws HL7ContentException if the name is an invalid segment name<a name="line.88"></a>
<span class="sourceLineNo">089</span>     */<a name="line.89"></a>
<span class="sourceLineNo">090</span>    public void setName(String name) throws HL7ContentException {<a name="line.90"></a>
<span class="sourceLineNo">091</span>        this.checkSegmentName(name);<a name="line.91"></a>
<span class="sourceLineNo">092</span>        HL7Field field = new HL7Field(name);<a name="line.92"></a>
<span class="sourceLineNo">093</span>        if (this.fields.isEmpty())<a name="line.93"></a>
<span class="sourceLineNo">094</span>            this.fields.add(field);<a name="line.94"></a>
<span class="sourceLineNo">095</span>        else<a name="line.95"></a>
<span class="sourceLineNo">096</span>            this.fields.set(0, field);<a name="line.96"></a>
<span class="sourceLineNo">097</span>    }<a name="line.97"></a>
<span class="sourceLineNo">098</span><a name="line.98"></a>
<span class="sourceLineNo">099</span>    /**<a name="line.99"></a>
<span class="sourceLineNo">100</span>     * Get number of fields (including segment name).<a name="line.100"></a>
<span class="sourceLineNo">101</span>     */<a name="line.101"></a>
<span class="sourceLineNo">102</span>    public int getNumFields() {<a name="line.102"></a>
<span class="sourceLineNo">103</span>        return this.fields.size();<a name="line.103"></a>
<span class="sourceLineNo">104</span>    }<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span>    /**<a name="line.106"></a>
<span class="sourceLineNo">107</span>     * Add a field to the end of this segment.<a name="line.107"></a>
<span class="sourceLineNo">108</span>     *<a name="line.108"></a>
<span class="sourceLineNo">109</span>     * @param field field to add<a name="line.109"></a>
<span class="sourceLineNo">110</span>     * @throws IllegalArgumentException if field is null<a name="line.110"></a>
<span class="sourceLineNo">111</span>     */<a name="line.111"></a>
<span class="sourceLineNo">112</span>    public void appendField(HL7Field field) {<a name="line.112"></a>
<span class="sourceLineNo">113</span>        if (field == null)<a name="line.113"></a>
<span class="sourceLineNo">114</span>            throw new IllegalArgumentException("field is null");<a name="line.114"></a>
<span class="sourceLineNo">115</span>        this.fields.add(field);<a name="line.115"></a>
<span class="sourceLineNo">116</span>    }<a name="line.116"></a>
<span class="sourceLineNo">117</span><a name="line.117"></a>
<span class="sourceLineNo">118</span>    /**<a name="line.118"></a>
<span class="sourceLineNo">119</span>     * Set a field in this segment. If the segment doesn't have &lt;code&gt;index&lt;/code&gt; fields, intermediate empty fields will<a name="line.119"></a>
<span class="sourceLineNo">120</span>     * be added.<a name="line.120"></a>
<span class="sourceLineNo">121</span>     *<a name="line.121"></a>
<span class="sourceLineNo">122</span>     * &lt;p&gt;<a name="line.122"></a>
<span class="sourceLineNo">123</span>     * This method cannot be used to set the segment name. Use {@link #setName} for that.<a name="line.123"></a>
<span class="sourceLineNo">124</span>     *<a name="line.124"></a>
<span class="sourceLineNo">125</span>     * @param field field to set<a name="line.125"></a>
<span class="sourceLineNo">126</span>     * @param index index of the field in the segment (where zero is the segment name); must be at least one<a name="line.126"></a>
<span class="sourceLineNo">127</span>     * @throws IllegalArgumentException if field is null<a name="line.127"></a>
<span class="sourceLineNo">128</span>     * @throws IllegalArgumentException if index is zero or less<a name="line.128"></a>
<span class="sourceLineNo">129</span>     */<a name="line.129"></a>
<span class="sourceLineNo">130</span>    public void setField(int index, HL7Field field) {<a name="line.130"></a>
<span class="sourceLineNo">131</span>        if (field == null)<a name="line.131"></a>
<span class="sourceLineNo">132</span>            throw new IllegalArgumentException("field is null");<a name="line.132"></a>
<span class="sourceLineNo">133</span>        if (index &lt; 1)<a name="line.133"></a>
<span class="sourceLineNo">134</span>            throw new IllegalArgumentException("index=" + index);<a name="line.134"></a>
<span class="sourceLineNo">135</span>        while (this.fields.size() &lt; index + 1)<a name="line.135"></a>
<span class="sourceLineNo">136</span>            this.fields.add(HL7Field.EMPTY);<a name="line.136"></a>
<span class="sourceLineNo">137</span>        this.fields.set(index, field);<a name="line.137"></a>
<span class="sourceLineNo">138</span>    }<a name="line.138"></a>
<span class="sourceLineNo">139</span><a name="line.139"></a>
<span class="sourceLineNo">140</span>    /**<a name="line.140"></a>
<span class="sourceLineNo">141</span>     * Convenience method. Equivalent to:<a name="line.141"></a>
<span class="sourceLineNo">142</span>     * &lt;blockquote&gt;<a name="line.142"></a>
<span class="sourceLineNo">143</span>     * &lt;code&gt;setField(index, new HL7Field(value))&lt;/code&gt;<a name="line.143"></a>
<span class="sourceLineNo">144</span>     * &lt;/blockquote&gt;<a name="line.144"></a>
<span class="sourceLineNo">145</span>     *<a name="line.145"></a>
<span class="sourceLineNo">146</span>     * @param value<a name="line.146"></a>
<span class="sourceLineNo">147</span>     */<a name="line.147"></a>
<span class="sourceLineNo">148</span>    public void setField(int index, String value) {<a name="line.148"></a>
<span class="sourceLineNo">149</span>        this.setField(index, new HL7Field(value));<a name="line.149"></a>
<span class="sourceLineNo">150</span>    }<a name="line.150"></a>
<span class="sourceLineNo">151</span><a name="line.151"></a>
<span class="sourceLineNo">152</span>    /**<a name="line.152"></a>
<span class="sourceLineNo">153</span>     * Get a field by "HL7 index". E.g., if this message is "ABC", an index of 3 would return ABC.3. If index is zero, the name<a name="line.153"></a>
<span class="sourceLineNo">154</span>     * of this segment is returned.<a name="line.154"></a>
<span class="sourceLineNo">155</span>     *<a name="line.155"></a>
<span class="sourceLineNo">156</span>     * @param index of the requested field<a name="line.156"></a>
<span class="sourceLineNo">157</span>     * @return the requested field, or null if not present in this segment<a name="line.157"></a>
<span class="sourceLineNo">158</span>     * @throws IllegalArgumentException if &lt;code&gt;index&lt;/code&gt; is negative<a name="line.158"></a>
<span class="sourceLineNo">159</span>     */<a name="line.159"></a>
<span class="sourceLineNo">160</span>    public HL7Field getField(int index) {<a name="line.160"></a>
<span class="sourceLineNo">161</span>        if (index &lt; 0)<a name="line.161"></a>
<span class="sourceLineNo">162</span>            throw new IllegalArgumentException("index=" + index);<a name="line.162"></a>
<span class="sourceLineNo">163</span>        if (index &gt;= this.fields.size())<a name="line.163"></a>
<span class="sourceLineNo">164</span>            return null;<a name="line.164"></a>
<span class="sourceLineNo">165</span>        return this.fields.get(index);<a name="line.165"></a>
<span class="sourceLineNo">166</span>    }<a name="line.166"></a>
<span class="sourceLineNo">167</span><a name="line.167"></a>
<span class="sourceLineNo">168</span>    /**<a name="line.168"></a>
<span class="sourceLineNo">169</span>     * Get all of the fields, starting with the segment name.<a name="line.169"></a>
<span class="sourceLineNo">170</span>     */<a name="line.170"></a>
<span class="sourceLineNo">171</span>    public HL7Field[] getFields() {<a name="line.171"></a>
<span class="sourceLineNo">172</span>        return this.fields.toArray(new HL7Field[this.fields.size()]);<a name="line.172"></a>
<span class="sourceLineNo">173</span>    }<a name="line.173"></a>
<span class="sourceLineNo">174</span><a name="line.174"></a>
<span class="sourceLineNo">175</span>    /**<a name="line.175"></a>
<span class="sourceLineNo">176</span>     * Trim off all but the first &lt;code&gt;size&lt;/code&gt; fields. If the current number of fields is already<a name="line.176"></a>
<span class="sourceLineNo">177</span>     * less than or equal to &lt;code&gt;size&lt;/code&gt; then nothing happens.<a name="line.177"></a>
<span class="sourceLineNo">178</span>     *<a name="line.178"></a>
<span class="sourceLineNo">179</span>     * @throws IllegalArgumentException if &lt;code&gt;size&lt;/code&gt; is less than one<a name="line.179"></a>
<span class="sourceLineNo">180</span>     */<a name="line.180"></a>
<span class="sourceLineNo">181</span>    public void trimTo(int size) {<a name="line.181"></a>
<span class="sourceLineNo">182</span>        if (size &lt; 1)<a name="line.182"></a>
<span class="sourceLineNo">183</span>            throw new IllegalArgumentException("size &lt; 1");<a name="line.183"></a>
<span class="sourceLineNo">184</span>        while (size &lt; this.fields.size())<a name="line.184"></a>
<span class="sourceLineNo">185</span>            this.fields.remove(this.fields.size() - 1);<a name="line.185"></a>
<span class="sourceLineNo">186</span>        this.fields.trimToSize();<a name="line.186"></a>
<span class="sourceLineNo">187</span>    }<a name="line.187"></a>
<span class="sourceLineNo">188</span><a name="line.188"></a>
<span class="sourceLineNo">189</span>    /**<a name="line.189"></a>
<span class="sourceLineNo">190</span>     * Append string encoding of this segment to the provided buffer.<a name="line.190"></a>
<span class="sourceLineNo">191</span>     *<a name="line.191"></a>
<span class="sourceLineNo">192</span>     * @param seps HL7 separator and escape characters<a name="line.192"></a>
<span class="sourceLineNo">193</span>     */<a name="line.193"></a>
<span class="sourceLineNo">194</span>    public void append(StringBuilder buf, HL7Seps seps) {<a name="line.194"></a>
<span class="sourceLineNo">195</span>        boolean first = true;<a name="line.195"></a>
<span class="sourceLineNo">196</span>        for (HL7Field field : this.fields) {<a name="line.196"></a>
<span class="sourceLineNo">197</span>            if (first)<a name="line.197"></a>
<span class="sourceLineNo">198</span>                first = false;<a name="line.198"></a>
<span class="sourceLineNo">199</span>            else<a name="line.199"></a>
<span class="sourceLineNo">200</span>                buf.append(seps.getFieldSep());<a name="line.200"></a>
<span class="sourceLineNo">201</span>            field.append(buf, seps);<a name="line.201"></a>
<span class="sourceLineNo">202</span>        }<a name="line.202"></a>
<span class="sourceLineNo">203</span>    }<a name="line.203"></a>
<span class="sourceLineNo">204</span><a name="line.204"></a>
<span class="sourceLineNo">205</span>    /**<a name="line.205"></a>
<span class="sourceLineNo">206</span>     * Convert to a string using the provided separators.<a name="line.206"></a>
<span class="sourceLineNo">207</span>     *<a name="line.207"></a>
<span class="sourceLineNo">208</span>     * @param seps HL7 separator and escape characters<a name="line.208"></a>
<span class="sourceLineNo">209</span>     */<a name="line.209"></a>
<span class="sourceLineNo">210</span>    public String toString(HL7Seps seps) {<a name="line.210"></a>
<span class="sourceLineNo">211</span>        StringBuilder buf = new StringBuilder();<a name="line.211"></a>
<span class="sourceLineNo">212</span>        this.append(buf, seps);<a name="line.212"></a>
<span class="sourceLineNo">213</span>        return buf.toString();<a name="line.213"></a>
<span class="sourceLineNo">214</span>    }<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span>    /**<a name="line.216"></a>
<span class="sourceLineNo">217</span>     * Convert to a string using {@link HL7Seps#DEFAULT}.<a name="line.217"></a>
<span class="sourceLineNo">218</span>     */<a name="line.218"></a>
<span class="sourceLineNo">219</span>    @Override<a name="line.219"></a>
<span class="sourceLineNo">220</span>    public String toString() {<a name="line.220"></a>
<span class="sourceLineNo">221</span>        return this.toString(HL7Seps.DEFAULT);<a name="line.221"></a>
<span class="sourceLineNo">222</span>    }<a name="line.222"></a>
<span class="sourceLineNo">223</span><a name="line.223"></a>
<span class="sourceLineNo">224</span>    @Override<a name="line.224"></a>
<span class="sourceLineNo">225</span>    public boolean equals(Object obj) {<a name="line.225"></a>
<span class="sourceLineNo">226</span>        if (obj == null || obj.getClass() != getClass())<a name="line.226"></a>
<span class="sourceLineNo">227</span>            return false;<a name="line.227"></a>
<span class="sourceLineNo">228</span>        HL7Segment that = (HL7Segment)obj;<a name="line.228"></a>
<span class="sourceLineNo">229</span>        return this.fields.equals(that.fields);<a name="line.229"></a>
<span class="sourceLineNo">230</span>    }<a name="line.230"></a>
<span class="sourceLineNo">231</span><a name="line.231"></a>
<span class="sourceLineNo">232</span>    @Override<a name="line.232"></a>
<span class="sourceLineNo">233</span>    public int hashCode() {<a name="line.233"></a>
<span class="sourceLineNo">234</span>        return this.fields.hashCode();<a name="line.234"></a>
<span class="sourceLineNo">235</span>    }<a name="line.235"></a>
<span class="sourceLineNo">236</span><a name="line.236"></a>
<span class="sourceLineNo">237</span>    /**<a name="line.237"></a>
<span class="sourceLineNo">238</span>     * Parse fields from given line and add them.<a name="line.238"></a>
<span class="sourceLineNo">239</span>     *<a name="line.239"></a>
<span class="sourceLineNo">240</span>     * @param line segment or segment fragment<a name="line.240"></a>
<span class="sourceLineNo">241</span>     * @param seps separator and escape characters<a name="line.241"></a>
<span class="sourceLineNo">242</span>     * @throws HL7ContentException if this segment contains zero fields and the first field is not a valid segment name<a name="line.242"></a>
<span class="sourceLineNo">243</span>     */<a name="line.243"></a>
<span class="sourceLineNo">244</span>    protected void parseAndAddFields(String line, HL7Seps seps) throws HL7ContentException {<a name="line.244"></a>
<span class="sourceLineNo">245</span>        int[] fieldSeps = HL7Util.find(line, seps.getFieldSep());<a name="line.245"></a>
<span class="sourceLineNo">246</span>        int posn = 0;<a name="line.246"></a>
<span class="sourceLineNo">247</span>        for (int i = 0; i &lt; fieldSeps.length; i++) {<a name="line.247"></a>
<span class="sourceLineNo">248</span>            String string = line.substring(posn, fieldSeps[i]);<a name="line.248"></a>
<span class="sourceLineNo">249</span>            if (this.fields.isEmpty())<a name="line.249"></a>
<span class="sourceLineNo">250</span>                this.checkSegmentName(string);<a name="line.250"></a>
<span class="sourceLineNo">251</span>            this.fields.add(new HL7Field(string, seps));<a name="line.251"></a>
<span class="sourceLineNo">252</span>            posn = fieldSeps[i] + 1;<a name="line.252"></a>
<span class="sourceLineNo">253</span>        }<a name="line.253"></a>
<span class="sourceLineNo">254</span>    }<a name="line.254"></a>
<span class="sourceLineNo">255</span><a name="line.255"></a>
<span class="sourceLineNo">256</span>    /**<a name="line.256"></a>
<span class="sourceLineNo">257</span>     * Verify segment name is legit.<a name="line.257"></a>
<span class="sourceLineNo">258</span>     */<a name="line.258"></a>
<span class="sourceLineNo">259</span>    private void checkSegmentName(String name) throws HL7ContentException {<a name="line.259"></a>
<span class="sourceLineNo">260</span>        if (name.length() != 3)<a name="line.260"></a>
<span class="sourceLineNo">261</span>            throw new HL7ContentException("invalid segment name `" + name + "'");<a name="line.261"></a>
<span class="sourceLineNo">262</span>    }<a name="line.262"></a>
<span class="sourceLineNo">263</span>}<a name="line.263"></a>
<span class="sourceLineNo">264</span><a name="line.264"></a>




























































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